linux-kernel - Re: [GIT PULL] x86/mm changes for v5.9

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Message-ID: <20200806231250.GA27140@suse.de>
Date:   Fri, 7 Aug 2020 01:12:50 +0200
From:   Joerg Roedel <jroedel@...e.de>
To:     "Jason A. Donenfeld" <Jason@...c4.com>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [GIT PULL] x86/mm changes for v5.9

On Fri, Aug 07, 2020 at 12:56:51AM +0200, Joerg Roedel wrote:
> I still don't fully understand why, but its late here and my head spins.
> So I take another look tomorrow in the hope to understand it better.

I think I know what the bug is, I am calling p4d_offset(pgd, addr)
without checking for pgd_none() first. That is still a bug in the code
wich needs fixing, even with the revert.


	Joerg